628455804 has 24 divisors (see below), whose sum is σ = 1506030288. Its totient is φ = 203823360.

The previous prime is 628455797. The next prime is 628455811. The reversal of 628455804 is 408554826.

It is an interprime number because it is at equal distance from previous prime (628455797) and next prime (628455811).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 707277 + ... + 708164.

It is an arithmetic number, because the mean of its divisors is an integer number (62751262).

Almost surely, 2^628455804 is an apocalyptic number.

It is an amenable number.

628455804 is an abundant number, since it is smaller than the sum of its proper divisors (877574484).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

628455804 is a wasteful number, since it uses less digits than its factorization.

628455804 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1415485 (or 1415483 counting only the distinct ones).

The product of its (nonzero) digits is 307200, while the sum is 42.

The square root of 628455804 is about 25069.0208025762. The cubic root of 628455804 is about 856.5609022902.

The spelling of 628455804 in words is "six hundred twenty-eight million, four hundred fifty-five thousand, eight hundred four".